This model is now on sale at Prius Shop for $185. From the picture, I believe it has the compass as well. I know how "easy these are to instal LOL I might call my dealer to see how much they'll charge ,me Auto-Dimming Mirror with Homelink for 2012-2014 Toyota Prius v - PriusChat Shop
There's a thread on this board that has a step-by-step photo installation guide to doing it yourself. I bought my mirror on eBay for $50 and installed it in about an hour, with no problems. It actually was pretty simple. It's been working great for the last 2 years.
Sorry -- the instructions are here: https://dl.dropboxusercontent.com/u/3541607/HomelinkInstall1.pdf These are the instructions I used for my install.
